MTG >Combos >Gleaming Barrier +Ashnod's Altar +Lightning Greaves +Koll, the Forgemaster +

With Knoll in play, cast Gleaming Barrier Equip him with Lightning Greaves and sacrifice him with Ashnod's Altar to add two mana Gleaming Barrier's ability will trigger, create a Treasure Token Knoll's ability will trigger, return Gleaming Barrier to your hand Repeat the process for infinite mana